WESCO INTERNATIONAL INC

In this Annual Report on Form 10-K, “Wesco” refers to WESCO International, Inc., and its subsidiaries and its predecessors unless the context otherwise requires. References to “we,” “us,” “our” and the “Company” refer to Wesco and its subsidiaries.

The Company

WESCO International, Inc. (“Wesco International”) and its subsidiaries (collectively, “Wesco” or the “Company”), headquartered in Pittsburgh, Pennsylvania, is a leading provider of business-to-business distribution, logistics services and supply chain solutions.

We employ approximately 20,000 people, maintain relationships with more than 35,000 suppliers, and serve nearly 140,000 customers worldwide. With millions of products, end-to-end supply chain services, and leading digital capabilities, Wesco provides innovative solutions to meet customer needs across commercial and industrial businesses, contractors, educational institutions, government agencies, technology companies, telecommunications providers, and utilities. Our innovative solutions include supply chain management, logistics and transportation, procurement, warehousing and inventory management, as well as kitting and labeling, limited assembly of products and installation enhancement. Wesco operates more than 700 sites, including distribution centers, fulfillment centers, and sales offices, in approximately 50 countries, providing a local presence for customers and a global network to serve multi-location businesses and global corporations.

Business Segments and Industry Overview

Wesco has operating segments comprising three strategic business units consisting of Electrical & Electronic Solutions (“EES”), Communications & Security Solutions (“CSS”) and Utility & Broadband Solutions (“UBS”).

The following is a description of each of our business segments and the industries in which they operate.

The EES segment, with approximately 6,700 employees serving customers in over 50 countries, is a North American leader, and supplies a broad range of products and solutions primarily to construction, industrial and original equipment manufacturer (“OEM”) customers. Construction and industrial customers include a wide array of diversified manufacturers and contractors, engineering, procurement and construction firms for industrial, infrastructure, electrical, commercial, and data and broadband communications projects. Specific applications include projects for refineries, railways, wastewater treatment facilities, data centers, security installations, offices, and modular and mobile homes. OEM customers require products used in the manufacturing of automotive, industrial, medical, transportation, marine, military and communications equipment. The EES product portfolio includes a broad range of electrical equipment and supplies, automation and connected devices (the “Internet of Things” or “IoT”), security, lighting, wire and cable, safety, and maintenance, repair and operating (“MRO”) products from industry-leading manufacturing partners. The EES service portfolio includes solutions to improve project execution, direct and indirect manufacturing supply chain optimization programs, lighting and renewables advisory services, and digital and automation solutions to improve safety and productivity. The EES segment operates in highly fragmented markets that include thousands of small, regional and locally based privately owned competitors, as well as several large, multi-national companies.

The CSS segment, with approximately 4,700 employees serving customers in over 50 countries, is a global leader in data center, network infrastructure and security solutions. For data centers, the CSS business leverages the complementary expertise and resources of the UBS and EES business units to deliver an integrated offering, combining various Wesco products and services, with specialized capabilities across all stages of data center design, development, operations, maintenance, and support. Its network infrastructure portfolio includes cabling and connectivity, power systems, wireless technologies, connected devices (IoT), and related products to enable seamless connectivity and communications in commercial buildings, hyperscale data centers, multi-tenant data centers, and cloud-based platforms. In the security business, CSS offers on premise, cloud or hybrid comprehensive solutions for video surveillance, fire and intrusion detection, access control, door locking, and other technologies that help create safe and intelligent environments for customers. The data center, network infrastructure, and security businesses are large and diverse, encompassing sectors such as technology, finance, telecommunications, transportation, education, government, healthcare, and retail. CSS sells directly to end-users or through an extensive network of channel partners, including data communications contractors, security and network integrators, professional audio/visual integrators, and systems integrators. CSS also provides a wide range of professional A/V, safety, facilities, and energy management solutions. The full CSS product portfolio is frequently coupled with services designed to enhance efficiency and productivity across all customer segments globally. These services include data center services, advisory, installation enhancement, project deployment, supply chain solutions, and management platforms.

The UBS segment is a leader in North America, with approximately 2,300 employees serving customers primarily in the U.S. and Canada, and provides products and services to investor-owned utilities, public power companies, including municipalities, as well as global service providers, wireless providers, broadband operators and the contractors that service these customers. Investor-owned utility companies provide a combination of electric generation, transmission and/or distribution and are owned by investors or shareholders while public power entities are generally non-profit entities owned by their members or governed by local, state, or municipal governments. These two businesses comprise the vast majority of utility customers in the U.S. and Canada. The products sold include wire and cable, transformers, transmission and distribution hardware, switches, protective devices, connectors, lighting, conduit, fiber and copper cable, connectivity products, pole line hardware, racks, cabinets, safety and MRO products, and point-to-point wireless devices. UBS also offers a complete set of service solutions including fiber project management, high and medium voltage project design and support, pre-wired meters and capacitor banks, meter testing and advanced metering infrastructure installation, personal protective equipment dielectric testing, tool repair, emergency response management, storage yard management, materials management, and logistics management to improve customer supply chain efficiencies.

For information concerning the financial results of our business segments, as well as our domestic and foreign operations, see Note 16, “Business Segments” in the Notes to Consolidated Financial Statements.

Business Strategy

Wesco’s vision is to be the best tech-enabled supply chain solutions provider in the world. We believe that accomplishing this vision depends on the successful execution of our strategy, which comprises three elements:

Extend Our Leading Scale and Value Proposition: Our long-term growth potential benefits from secular trends in electrification, automation/IoT, green energy and utility grid modernization, 24/7 connectivity and security, supply chain consolidation, and digitalization and artificial intelligence. Our broad portfolio of product and service offerings, as well as our global footprint and capabilities, enable us to provide value to our customers.

Further Develop the Organization and Our Culture of Excellence: Wesco’s five core values are foundational to everything we do: Our people are our greatest asset, One team, Always strive to be the best, Innovation, and Winning with customers and suppliers. Safety remains a priority and a company-wide responsibility at Wesco. Our goal is to provide a safe work environment for our employees and all those who visit our facilities. Our education and awareness campaigns for employees include training for our fulfillment and distribution centers, enhanced reporting and investigative tools, and reinforced processes at the local site level. Additionally, our commitment to continuous improvement is a hallmark of our business, and we do so by deploying Lean business practices and Agile methodologies. Wesco continues to enhance its approach to Environmental, Social, and Governance (“ESG”) matters, including integrating sustainability into our corporate strategy, and expanding our employee training and leadership development programming.

Digitalize and Transform the Business: Digitalization is a secular trend affecting the entire business-to-business distribution value chain. Wesco offers significant digital capabilities today and intends to lead the further digitalization of our industry in the years to come, making it easier to do business with Wesco, and increase the value of our data by providing unique insight into end-market and customer use of the products and services we offer. We are implementing digital tools that add value within the company and at both ends of the supply chain. We have made substantial progress on our digital transformation journey. These digital capabilities will improve efficiency and sales effectiveness of our business, and will enable us to create more value to our customers and supplier partners.

The three elements of our strategy touch every aspect of our business – from how we add value to our supplier partners and how we go-to-market within our three strategic business units to how we drive efficiency across the organization. We believe that the successful execution of these strategies, combined with our comprehensive product and service offerings, will provide cost-effective and innovative end-to-end supply chain solutions for a diverse set of customers across our end markets. Due to our leadership position, scale, global reach, complete portfolio of products, extensive services and insights from our data, we expect to grow our sales over the long term at a faster rate than the overall industry.

As a distribution and supply chain services company, our approach to sustainability is to reduce the environmental impacts of our own operations and assist our customers and suppliers with attaining their sustainability goals through the products and services we provide. We do this by designing and providing solutions to help them reduce greenhouse gas (“GHG”) emissions at their facilities and in their supply chains, improve productivity through automation and increase output more efficiently and effectively through digital tools and applications. We build on our own internal strategies for sustainability, while reinforcing our corporate responsibility. Our sustainability efforts are an integral part of our operations and core values.

Customers

We have a large base of nearly 140,000 active customers across commercial and industrial businesses, contractors, educational institutions, government agencies, technology companies, telecommunications providers, and utilities. Our top ten customers accounted for approximately 12% of our sales in 2024. No single customer accounted for more than 4% of our sales in 2024.

Suppliers

Our global network of distribution centers, fulfillment centers, and sales offices provide customers with access to millions of products. Specific locations tailor their inventories to meet the needs of their customers, providing a local presence and a global network to service multi-location businesses and global corporations.

We purchase products from a diverse group of more than 35,000 suppliers who are located predominantly in North America, but who manufacture products around the world. The main product categories we source are electrical distribution and controls, communications and security, wire, cable and conduit, lighting and sustainability, automation and motors, and general supplies. In 2024, our ten largest suppliers accounted for approximately 30% of our purchases. No single supplier accounted for more than 6% of our total purchases.

Our supplier relationships are important to us, providing access to a wide range of products, services, technical training, and sales and marketing support. We have commercial agreements with more than 470 preferred suppliers and purchase approximately 66% of our products pursuant to these arrangements.

We offer a wide range of sustainable products from the world’s leading manufacturers and help our customers determine solutions to meet their sustainability goals. Key categories include energy-efficient products, energy-management solutions, renewable energy products, sustainable MRO products, and workplace safety products.

Services

Our customers’ challenges are constantly evolving and require comprehensive yet practical solutions. As part of our overall offerings, we provide a comprehensive portfolio of differentiated solutions designed to address our customers’ business needs, help drive efficiency, improve productivity, increase profitability, and mitigate risk. These include, among others:

•Advisory services to help our partners and customers with advanced solutions that leverage the industry’s leading technologies, optimize supply chains, implement Lean practices, improve safety and digitally transform workplaces;

•Installation enhancement services to adapt products and packaging in order to streamline processes and reduce the total cost of installation;

•Project deployment services to help secure job site materials, prevent loss, improve efficiency, reduce job site waste, ensure day-to-day supplies are on hand and improve scalability across global deployments;

•Supply chain programs to improve productivity, reduce operating costs and increase operational efficiencies; and

•Digital services and e-business integrations to transform how our customers consume, deploy, and procure materials and technologies, supporting data-driven decisions and increased operational efficiency.

We are also a provider of services focused on energy efficiency and renewable power to reduce our energy consumption and that of our customers. Our energy solutions offer turnkey and retrofit solutions designed to reduce energy consumption and improve building efficiency. We also have a team that focuses on providing technical support to installers and end-users of renewable products and solutions.

Business Strengths

Wesco’s mission is to help our customers build, connect, power and protect the world. We believe that our business possesses strengths that will enable us to achieve this mission. The environment in which we operate is highly fragmented and there is significant competition within each end market and geographic area that we serve. Customers look to product line breadth, product availability, service capabilities, geographic proximity and price. Our scale, broad portfolio of products, technical expertise, global reach with local relationships, smart, digital solutions, and comprehensive value-added services provide distinct advantages that benefit our customers.

Broad Portfolio of Products from Top Brands. Our broad product portfolio enables us to offer comprehensive, end-to-end solutions in each of our three business units. We partner with the industries’ largest suppliers to deliver leading brands across every product category including automation/IoT, broadband, communications, electrical, electronics, energy, lighting, MRO, networking, renewables, safety, security, utility and wire and cable.

Customized Solutions. Our customers have unique business models, challenges and priorities. Our dedicated technical experts have extensive experience and product and services knowledge that enable them to provide solutions tailored to the various needs of our customers. With specialized industry knowledge and a focus on the leading technologies, we help design and deploy solutions that address critical business priorities.

Uniquely Positioned to Benefit from Secular Trends. Each of our business units is positioned to benefit from secular trends that are driving growth. These include increasing electrification, growth of automation/IoT, data center, green energy and utility grid modernization, 24/7 connectivity and security, supply chain consolidation and relocation to North America, and digitalization and AI.

Ingenuity and Expertise. Our teams are empowered with access to real-time information and tools that enable better decision-making and facilitate easier interaction with customers. Our sales, service and operational specialists bring a depth of industry experience spanning construction, manufacturing, electrical, renewables, lighting, communications, data centers, security, professional audio and visual equipment, utility, broadband and more.

Innovative Digital Roadmap. We are investing in digital tools and platforms to enable a new level of collaboration, agility and productivity. From adaptable omni-channel e-commerce tools and platforms, to connected buildings and facility management, we are a supply chain partner that addresses our customers’ digital needs and drives operational excellence.

Global Reach with Local Expertise. Our international operations and global sourcing capabilities enable us to service our customers around the world. Wesco has more than 700 sites, including distribution centers, fulfillment centers, and sales offices, with operations in approximately 50 countries. Our global distribution network includes 59 facilities that operate as regional distribution centers or large fulfillment centers in key geographic areas in North America, Europe and South America. These facilities add value for our customers and suppliers through the combination of inventory selection, online ordering, shipment capabilities, and order handling and fulfillment. Our global network allows us to enhance local customer service by tailoring individual site products and services to local customer needs.

Smart, Digital Solutions. Our work with technology companies brings capabilities in digital and information-based solutions. These solutions include global e-commerce platforms, vendor managed inventory, point of use systems, last mile optimization, supply chain engineering and intelligent automation. Our recent acquisitions further extend our end-to-end service offerings and digital solutions for our customers. From enterprise-wide connectivity to real-time analytics and reporting, our digital ecosystem supports our customers’ business needs.

Comprehensive Value-Added Services. We provide a wide range of value-added services, which draw on our product knowledge and logistics expertise, to help our customers save time, improve productivity, mitigate risk and increase profitability. Our broad service offering includes installation enhancement, materials management, kitting and labeling, extensive MRO solutions, onsite job trailer solutions, end-to-end supply chain management and project management/execution across the project lifecycle.

Geography

We sell to global customers through our network of distribution centers, fulfillment centers, and sales offices consisting of 426 locations in the U.S., 143 in Canada, 56 in Europe and the Middle East, 46 in Central America, the Caribbean and South America, and 57 in the Asia Pacific region, which includes Australia. This includes 59 facilities that operate as regional distribution centers or large fulfillment centers, of which 46 are located in the U.S., eight in Canada, three in Europe and two in South America.

Human Capital

At Wesco, our people and our high-performance culture are our greatest assets. We are committed to continuous improvement and leveraging our talented workforce in pursuing Wesco’s vision to be the best tech-enabled supply chain solutions provider in the world. We also believe that our employees should be treated with dignity and respect. Our Human Rights Policy promotes safety in the workplace, training, disabled employee accommodations, and freedom of association and collective bargaining. It prohibits discrimination, harassment, and child and forced labor. It also provides guidance on appropriate working hours, wages and benefits, and safe and healthy workplace conditions.

As of December 31, 2024, Wesco had approximately 20,000 full-time employees worldwide, with approximately 13,000 in the U.S. and the remaining 7,000 in international locations.

Safety. Safety is the first tenet of our core value of commitment to our people and we do not tolerate violations of established safety protocol. We work to reduce or eliminate health and safety risks through dedicated programs, leadership commitment, and employee best practice sharing and training. We seek to achieve continuous improvement in the safety of our facilities and track a series of metrics that provide guidance toward that improvement.

Our Global Corporate Safety team oversees our health and safety program, which covers the core processes and procedures for strong health and safety management, safe work practices, and regulatory compliance. Our health and safety program considers both preventative and reactionary management concepts and elements of the ISO-45001 guidelines and standards, as well as the strictest global regulations. The key components of our health and safety program are management and supervisory responsibilities, employee responsibilities, accident investigation processes, reporting of safety concerns, safety committee systems, new employee orientation, enforcement procedure, and regulatory compliance.

We have set a goal to achieve a 15% reduction in the total recordable injury rate (“TRIR”) from a 2020 baseline by 2030.

Training and Development. Wesco offers certification and training programs, some of which are required for all employees while others are voluntary or based on job role. Employees also have access to external training resources. Our learning and development function is comprised of seasoned talent that is continuously improving our process and enhancing our learning technology. This enables us to execute our learning strategy of providing employees with the knowledge, skills, and experiences they need to be effective and productive. We align our learning and development priorities to Wesco’s strategic business goals and initiatives. We offer a tuition reimbursement program to eligible employees to encourage the pursuit of undergraduate and graduate education to prepare employees for expanded roles in our business.

Our sales and operations development training program has been in place for more than ten years. The program is designed to systematically train and develop new college graduates through on-the-job rotations and cohort learning and development during the first year of employment. Graduates of the program move into various sales and operations roles after completing the one-year program. Additionally, we have a function-specific development program for recent college graduates seeking a career in IT, finance, or supply chain that provides members with eligibility for roles with increasing responsibilities commensurate with their career development goals. Individuals in this program have the opportunity to accelerate the development of their business and technical skills through three 8-month job rotations. We also sponsor a summer internship program to provide college students with work experience within staff or business functions and give them the opportunity to evaluate different career fields.

We have developed a collective approach to deliver personalized, successive development aligned with enterprise needs, known as “Leadership Essentials.” Leadership Essentials consists of separate programs curated for managers that are new to leading people or leaders of teams. The programs include personalized development journeys which are aligned to both the individual’s and the Company’s needs. Wesco also provides specific tools and resources to help leaders across the enterprise support ongoing transformational change.

Inclusive and Respectful Workplace Culture. We aim to foster a sense of individual and group belonging by 1) leveraging the unique experiences, backgrounds and perspectives of our talented workforce to support Wesco’s mission, 2) engaging employees and building an inclusive culture, 3) recruiting and developing talent from different backgrounds to bring new perspectives and thought processes to Wesco, and 4) supporting the communities in which we operate.

Wesco has six Business Resource Groups (“BRGs”) to support the following groups: women, BLIPOC (Black, Latino, Indigenous, and People of Color), LGBTQ+, people with diverse abilities, veterans of the armed forces, and our early-career employees. These BRGs foster a sense of community and inclusion and provide opportunities to network. The BRGs are global and open to all employees regardless of any aspect of their personal identity.

Our BRGs engage in various activities, such as:

•Building an inclusive culture, positively impacting employee engagement and creating an open forum for the exchange of ideas;

•Providing informal mentoring for employees;

•Identifying opportunities for adding value and growing Wesco’s business through community engagement; and

•Engaging with suppliers, customers and industry groups to share best practices, advance the industry, and drive business growth.

Company Ethics. We are firmly committed to operating with the highest level of ethics and integrity. This commitment is reflected in our Code of Business Conduct, which applies to our Directors, officers, employees and other parties when they are acting on behalf of Wesco. Annually, employees must acknowledge that they have received, read and will comply with the Code of Business Conduct. Our global Ethics and Compliance program provides employees with the tools they need to understand our expectations for ethical business conduct. It also provides an anonymous reporting channel for employees and outside parties to report issues of concern regarding workplace activities or business practices without fear of retaliation.

Compensation and Benefits Program. Wesco provides competitive compensation and benefits packages in our locations around the globe. In the U.S., we provide a comprehensive benefits program that offers choices to fit our employees’ diverse needs including health and disability benefits, paid time off (including a self-managed time off policy, flexible work arrangements, and family leave options for certain eligible employees), life insurance, retirement programs, and access to other services that support health and wellness. To further improve the health of our employees, we offer a variety of activities and programs that assist our employees and their family members to better manage or overcome major well-being challenges, including an employee assistance program, wellness coaching, case/disease management and wellness discounts.

Employee Engagement. We believe that employee engagement is good for our people and our business through improved productivity, better customer service, and importantly, an increased focus on safety. Wesco annually surveys employees to assess their engagement, as well as to solicit feedback and ideas on organizational changes, so senior management may more intelligently adjust to our employees’ evolving needs and support employee success. Wesco also promotes employee engagement through regular town hall discussions.

Community. Wesco has established relationships with several charitable organizations and encourages employees to volunteer in the community by providing one day of paid volunteer time off per year. By connecting with and contributing to local charitable organizations, Wesco supports the development of strong, vibrant and diverse communities. Wesco Cares is our corporate philanthropy program focused on affordable housing, humanitarian aid, and science, technology, engineering and mathematics (“STEM”), and provides for corporate charitable donations, employee volunteerism, and employee gift-matching. Employees are encouraged to volunteer in their communities on June 22nd as part of Wesco’s global annual day of caring.

Environmental Management

Environmental sustainability is a priority for Wesco. We strive to continually improve our environmental management by establishing and working towards various sustainability objectives. We leverage our environmental management experience in our offerings of products and services to our customers. The foundation of our environmental management is our Global Environmental, Health, Safety and Sustainability Policy, which aligns with key provisions of the ISO 14001:2015 environmental management standards. The policy includes clear management accountability for environmental sustainability, direct program responsibilities, key performance indicators and other metrics to track progress. We produce a Sustainability Report annually which is made public on our website. Information contained in the Sustainability Report is not part of, and should not be construed as being incorporated by reference into, this Annual Report on Form 10-K.

We are working to reduce our environmental impact in the following areas:

Energy. The vast majority of the energy we use is for lighting, heating, and cooling our more than 700 sites, including distribution centers, fulfillment centers, and sales offices, in approximately 50 countries around the world. Where practicable, we engage with the owners and agents of the buildings we lease to improve energy efficiency, and we include energy-efficiency requirements in new building leases. We have implemented lighting retrofit projects, conducted energy audits, and installed solar systems at certain facilities. Adding to our energy consumption is a fleet of approximately 1,300 trucks and 1,800 cars for our distribution and sales activities. Our Fleet Efficiency Policy includes the use of fuel-efficient vehicles, determining the most efficient routes, and idling restrictions.

Emissions. Our main source of direct and indirect GHG emissions from our own activities is attributed to the power and natural gas used by our facilities, which accounts for approximately 70% of total emissions from our own activities. A secondary source of our GHG emissions is our truck and car fleet, and part of our emissions is due to corporate travel and the lifecycle impact of our landfilled waste. We have implemented policies and technology to reduce the emissions impact of our fleet, which included evaluation of alternative fuel sources and an assessment of electric vehicle integration into our truck and sales fleet.

We have a goal to reduce absolute direct and certain indirect GHG emissions by 30% from a 2021 baseline by 2030.

Climate Impact. Wesco aligns with the Task Force on Climate-Related Financial Disclosures (“TCFD”) framework. We annually review environmental programs, policies, and data, including energy consumption and GHG emissions to identify and assess climate-related risks. The Board of Directors oversees the integration of ESG principles throughout our enterprise. This includes oversight of enterprise risk. Our Board of Directors receives regular updates and ongoing information on significant risks and risk mitigation plans. Our ESG management team also reports to the Board of Directors annually on the status of our ESG programs and progress on achieving sustainability goals. We have identified climate-related opportunities that include expanding our offering of energy-efficient and renewable energy products. We believe that Wesco is well positioned to expand our business in these energy efficiency and renewable energy technologies and projects.

Waste. Our top waste streams are cardboard, wood pallets and reels, metal and plastic. We strive to reduce these waste streams by applying Lean principles and identifying opportunities for reuse and recycling. We have developed regional relationships with recycling vendors that recycle non-traditional waste streams, specifically metal and wood.

We have a goal to reduce landfill waste intensity by 15% across our U.S. and Canadian locations from a 2020 baseline by 2030.

Water. As a distributor and supply chain solutions provider, we are not a major consumer of water. Our facilities primarily use water for sanitation, cleaning, and irrigation purposes. We track water usage at our locations and use the data to identify unusual consumption patterns that could indicate undetected leaks or excessive usage that requires intervention.

Intellectual Property

We consider our intellectual property, including trademarks, service marks, copyrights, patents, domain names, trade dress, trade secrets, proprietary technologies, and similar assets, to be important to our business. To protect our intellectual property rights, we rely on trademark, copyright and patent laws, trade secret procedures, and confidentiality and other agreements with employees, consultants, customers and other partners. We have registered trademarks, service marks, and patents in the U.S. and in various other countries. The “Wesco” and “Anixter” trademarks and service marks are registered in the U.S. and various foreign jurisdictions, and the “EECOL” service mark is registered in Canada, Chile, and Peru. Our U.S. trademarks and service marks include “Wesco®” and our corporate logo, among others. While in the aggregate our patents are valuable to our business, we do not believe that the loss of any of them would materially affect our business or financial condition. For a discussion of certain risks related to our intellectual property, see Item 1A, “Risk Factors - Risks Related to Our Information Systems and Technology and Intellectual Property.”

Environmental Matters

Our facilities and operations are subject to federal, state and local laws and regulations relating to environmental protection and human health and safety. Some of these laws and regulations may impose strict, joint and several liabilities on certain persons for the cost of investigation or remediation of contaminated properties. These persons may include former, current or future owners or operators of properties and persons who arranged for the disposal of hazardous substances. Our owned and leased real property may give rise to such investigation, remediation and monitoring liabilities under environmental laws. In addition, anyone disposing of certain products we distribute, such as ballasts, fluorescent lighting and batteries, must comply with environmental laws that regulate certain materials in these products.

We believe that we are in compliance, in all material respects, with applicable environmental laws. As a result, we do not anticipate making significant capital expenditures for environmental control matters either in the current year or in the near future.

Seasonality

Our operating results are not significantly affected by seasonal factors. Sales during the first and fourth quarters have historically been affected by a reduced level of activity primarily due to the impact of weather on projects. Sales typically increase beginning in March, with slight fluctuations per month through October. During periods of economic expansion or contraction, our sales by quarter have varied significantly from this pattern.

Website Access

Our Internet address iswww.wesco.com. Information contained on our website is not part of, and should not be construed as being incorporated by reference into, this Annual Report on Form 10-K. We make available free of charge under the “Investors” heading on our website our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as well as our Proxy Statements, as soon as reasonably practicable after such documents are electronically filed or furnished, as applicable, with the U.S. Securities and Exchange Commission (the “SEC”).

In addition, the charters for our Audit, Compensation, Executive and Nominating and Governance committees, as well as our Corporate Governance Guidelines, Code of Principles for Senior Executives, Independence Policy, Global Antibribery and Anticorruption Policy, and Code of Business Conduct for our Directors, officers and employees, are all available on our website at the “Leadership” link under the “Our Company” heading.

Forward-Looking Information

This Annual Report on Form 10-K contains various “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements involve certain unknown risks and uncertainties, including, among others, those contained in Item 1, “Business,” Item 1A, “Risk Factors,” and Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” When used in this Annual Report on Form 10-K, the words “anticipates,” “plans,” “believes,” “estimates,” “intends,” “expects,” “projects,” “will” and similar expressions may identify forward-looking statements, although not all forward-looking statements contain such words. Such statements, including, but not limited to, our statements regarding business strategy, growth strategy, competitive strengths, productivity and profitability enhancement, competition, new product and service introductions and liquidity and capital resources, are based on management’s current expectations and beliefs, as well as on assumptions made by and information currently available to management, current market trends and market conditions and involve various risks and uncertainties, some of which are beyond our control and which may cause actual results to differ materially from those contained in the forward-looking statements. Our actual results could differ materially from those expressed in any forward-looking statement made by us or on our behalf. In light of these risks and uncertainties, there can be no assurance that the forward-looking information will in fact prove to be accurate. We have undertaken no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Executive Officers

Our executive officers and their respective ages and positions as of February 14, 2025 are set forth below.

Set forth below is biographical information for our executive officers listed above.

John J. Engel has served as Chairman of the Board of Directors since May 2011 and as our President and Chief Executive Officer since 2009. Previously, Mr. Engel served as our Senior Vice President and Chief Operating Officer from 2004 to 2009. Before joining Wesco in 2004, Mr. Engel served as Senior Vice President and General Manager of Gateway, Inc., Executive Vice President and Senior Vice President of Perkin Elmer, Inc., Vice President and General Manager of Allied Signal, Inc., and also held various engineering, manufacturing and general management positions at General Electric Company.

David S. Schulz has served as our Executive Vice President and Chief Financial Officer since June 2020, and from October 2016 to June 2020, he served as Senior Vice President and Chief Financial Officer. Prior to joining Wesco, Mr. Schulz served as Senior Vice President and Chief Operating Officer of Armstrong Flooring, Inc. from April 2016 to October 2016 and from November 2013 to March 2016, he served as Senior Vice President and Chief Financial Officer of Armstrong World Industries, Inc., and as Vice President, Finance of the Armstrong Building Products division from 2011 to November 2013. Prior to joining Armstrong World Industries in 2011, he held various financial leadership roles with Procter & Gamble and The J.M. Smucker Company. Mr. Schulz began his career as an officer in the United States Marine Corps.

James F. Cameron has served as our Executive Vice President and General Manager of the Utility & Broadband Solutions division since June 2020. From January 2014 to June 2020 he served as Vice President and General Manager, Utility and Broadband Group and from 2011 to 2013 he was Regional Vice President of the utility business. Prior to joining Wesco in 2011, Mr. Cameron served as Senior Vice President of the Utility Group, and Vice President of Marketing & Operations with Irby, a Sonepar Company. Earlier in his career, Mr. Cameron held various positions with Hubbell Power Systems, Thomas & Betts and the ABB Power T&D Company.

William C. Geary, II has served as our Executive Vice President and General Manager of the Communications & Security Solutions division since June 2020. Prior to the merger with Anixter in 2020, Mr. Geary served as Executive Vice President - Network & Security Solutions of Anixter International Inc. from July 2017 to June 2020 and Senior Vice President - Global Markets - Network & Security Solutions from January 2017 to June 2017. Previously, Mr. Geary served 22 years and held a variety of senior management roles at Accu-Tech Corporation, a wholly owned subsidiary of Anixter.

Akash Khurana has served as our Executive Vice President and Chief Information and Digital Officer since joining the Company in November 2020. Before joining Wesco, Mr. Khurana served as Chief Information Officer and Chief Data Officer of Global information at McDermott International, Ltd. from March 2015 to November 2020. Previously, he served as Senior Director of Global Product Lines and Regional P&Ls at Baker Hughes and a variety of leadership roles at GE Healthcare and Power & Water Divisions.

Diane E. Lazzaris has served as our Executive Vice President and General Counsel since June 2020 and also as Corporate Secretary from February 2021 to December 2023. From 2014 to June 2020 she served as our Senior Vice President and General Counsel and from 2010 to December 2013 as our Vice President, Legal Affairs. From 2008 to 2010, Ms. Lazzaris served as Senior Vice President - Legal, General Counsel and Corporate Secretary of Dick’s Sporting Goods, Inc. From 1994 to 2008, she held various corporate counsel positions at Alcoa Inc., including Group Counsel to a group of global businesses.

Hemant Porwal has served as our Executive Vice President, Supply Chain and Operations division since June 2020, and from January 2015 to June 2020 as Vice President of Global Supply Chain and Operations. Before joining Wesco, Mr. Porwal served as Vice President at Sears Holding Corporation, leading their global procurement function since 2011, and at PepsiCo, Inc. where he held roles with increasing responsibilities in Operations, Supply Chain, Procurement and Finance.

Nelson J. Squires IIIhas served as our Executive Vice President and General Manager of the Electrical & Electronic Solutions division since June 2020, and from October 2019 to June 2020 he served as our Senior Vice President and Chief Operating Officer. From January 2018 to September 2019 he served as Group Vice President and General Manager of Wesco Canada/International/WIS and as Group Vice President and General Manager of Wesco Canada from August 2015 to January 2018. From 2010 to July 2015 he was Vice President and General Manager, North America Merchant Gases and President, Air Products Canada of Air Products and Chemicals, Inc. He has also served in regional and general management positions, as director of investor relations, and in various sales positions at Air Products. Earlier in his career, he was a captain in the United States Army.

Christine A. Wolf has served as our Executive Vice President and Chief Human Resources Officer since June 2020, and from June 2018 to June 2020 she served as Senior Vice President and Chief Human Resources Officer. Before joining Wesco from 2011 to June 2018, Ms. Wolf served as the Chief Human Resources Officer of Orbital ATK, Inc. until its acquisition by Northrop Grumman. From 2008 to 2011, she served as the Chief Human Resources Officer of Fannie Mae and from 2004 to 2008 she served as Chief Human Resources Officer of E*Trade Financial Corporation. Prior to that, she held various positions in human resources with companies in a variety of industries.